Dynamo-electric machine.



L. E. UNDERWOOD & S. R. BERGMA'N- DYNAMO ELECTRIC MACHINE.

APPLICATION FILED 0GT.10, 1908.

Patented Jan. 18,1910.

2 SHEETSSHBET 1.

Inventors Louis E. LJr\derwood,

Sven R Bergman, b y /g// (204% WiGnesse 1 Inventors,

ls El. Under-wood,

n RBer" man.

. body is wound with ,slots in the core body which said integral teeth, and means for fastening LOUIS E. UNDERWOOD AND SVEN R. BERGMA'N, TO GENERAL ELECTRIC COMPANY, A-

or'mrmv, MASSACHUSETTS, assienons con-romvrxon orivnw YORK.

DYNAmo ELEc'rRIc MACHINE.

Specification of Lotterslatent. Application filed October 10, 1908. Serial'No. 457,086.

Patented To all whom it may concern:

Be it known that we, LOUIS E. UNDER- woon, a citizen of the United States, and SvnN R. BERGMAN, a subject of the King of Sweden, residing at State of Massachusetts, have invented certain. new and useful Improvements in Dynamo-Electric Machines, of which the following is a specification.

Our invention relates to dynamoeleetric machines, and more particularly to the construction of such a machine in which a core formed. coils, and has for its object a novel arrangement and construction of parts. 2

Our invention consists in a core body of a dynamo-electric machine having a number of axially extending slots, integral teeth separating some of said slots, removable: teeth ormembers adapted to be inserted radially between the coils or conductors, these removable teeth having portions entering said alternate with said members to said core body. I

Other features which characterize our in -vention are pointed out in the claims annexed to and forming a part of this specification. For a better understanding of our invention, .however, reference may be had to the following description taken in connection with the accompanying drawings, in

Figure l is a plan view of a revolving mem ber of a dynamo-electric machine embodyiir our invention but with only one coil dotted in place, and is partly in section on the line 11 of Fig. 2 in order to show the interior construction; Fig. 2 1s a view of a rotor similar to that shown in Fi 1 with the coils in place; Fig. 3 is an en arged view of a section of a rotor with a supporting end' 4 is a perspective view and a keytherefor; and portion of a stationary finger in place; Fig. of a removable toot Fig. 5 is a view of a member of a dynamo-electric machine in 'and are preferably wedge shaped. Between Lynn, county of Essex,"

end laminae 11.

these slots are integral projecting teeth G which, it wrll'be seen from the drawing, alternatewith the slots about the periphery of the laminations. "On both sides of each of the slots 5 are axially extendin surfaces 7 upon WlllCll the form wound coi s 8 rest.

The winding for the rotor consists of a number of form Wound coils 8 which the removable teeth or members 9 help to hold in place. In assembling the windings onthe core, the conductors are placed on the surfaces 7 of the core body, portions of the coils engaging the integral teeth 6, and then the members 9 are inserted radially into position. These removable teeth or members 9 consist, preferably, of a bundle of T-shaped laminae 10 clamped between end laminae 11' of slightly greater thickness than the 1aminae 10, by means of rivets 12 headed in the- Each of these members 9 has a V-shaped groove 13 which lines up with a corresponding V-shaped groove in.the

side of each slot 5. lVhen the members 9 have been inserted radially into place between the conductors, the wedge shaped ends 14 entering the wedge shaped slots 5 and the overhanging portions 15 engaging the coils,

-substantially rectangularly shaped keys 16 are driven into the V-shaped grooves in the removable teeth and the sides of the slots, which together form a substantially rectangular hole, and thus draw the wedge shaped ends 1-1 of the removable teeth down tightly into the wedge shaped slots 5 and hold the members 9 from displacement. The end supporting fingers 17 are fastened to a disk 18, and support the end laminae of the members 9 and the end laminae of the teeth 6. These end supporting fingers are of standard construction.

In Fig. 5, we have shown a stationary member 19 having coils 20 held in place by Jan. 18,1910.

tin.-

removable teeth or members 9 similar to the members 9 illustrated in the other figures" of the drawing. The method of assembling a stationary member as shown is the same as that explained above What we claim as new and desire to secure by Letters Patent of the United States, is z- 1. In a dynamo-electric machine, a core havin teeth integral therewith and axially exten in wedge shaped slots in the body of the core between the teeth, a winding comprising form wound coils having portions engaging said integral teeth, removable for a rotating member.

teeth adapted to be inserted radially be tween said coil portions, said removable teeth havin wedge shaped end portions adapted to t lt said wedge shaped slots, and mleans for securing said removable teeth in ace. P 2. In a dynamo-electric machine, a core havin teeth integral therewith and axially exten ing wedge shaped slots in the body of the core between the teeth, .a winding comprising form wound coils having portions extendin wedge shaped slots in the body of the core between the teeth, a winding comprising form wound coils having portions engagln' said integral teeth, removable teeth a a apted to be inserted radially be- I tween said coil portions, said removable teeth being Wedge shaped at their lower ends to engae said wedge shaped slots and having V- aped grooves which register with V-shaped grooves in the core body and keys adapted to be driven into the holes formed by said grooves in order to tightly draw down the wedge shaped ends of the removable teeth into the wedge shaped slots.

In witness whereof, we have hereunto set our hands this 8th da of October, 1908.

LOUIS UNDERWOOD.

SVEN R. BERGMAN.

Witnesses:

JOHN A. MCMANUS, Jr. EXERINE BIRD. 

